Pipe-bending machine.



- PATENTED'JAN. 22, 1907.

H; A. PEDRIOK & G. A. SMITH.

PIPE BBNDING MAGHINE.

APPLICATION FILED MAR.1,1906.

2 SHEETS-SHEET L THE NORRIS PETERS co, WASHINGTON, n, c.

No. 84=2,1l1. PATENTED. JAN. 22, 1907. H. A. PEDRIGK & o. A. SMITH.

PIPE BENDING MACHINE.

APPLICATION FILED MAR.1,1906,.

2 SHEETS-SHEET 2.

. THE NORRIS PETERS 50., wnsmucmu, c.

'tion of rotary adjustment on the post. 7 idly bolted upon the top ofthe head 3 is a UNITED STATES PATENT OFFICE.

HOWARD A. PEDRIGK AND CHARLES A. SMITH, OF PHILADELPHIA, PENNSYLVANIA,ASSIGNURS TO SAID SMITH.

' PlPE-BENDING MACHINE.

Specification of Letters Patent.

Patented Jan. 22, 1907.

Application filed March 1, 1906. Serial No. 303,650.

character of the bend can be readily varied by change in the relation ofthe fixed bearing element of the machine to the moving element of thesame.

In the accompanying drawings, Figure 1 is a face view of a pipe-bendingmachine constructed in accordance with our invention. Fig. 2 is atransverse section on the line a a, Fig. 1; and Fig. 3 is a transversesection on the line b I), Fig. 1.

In the drawings, 1 represents a post or column intended to be rigidlybolted or otherwise secured to a floor or other support, this post orcolumn being hollow for the reception of the central stem 2 of a head 3,which is thereby mounted so as to rotate about a vertical axis on thepost 1, the upper end of said post being split and provided withclamping-ears 4 and bolts 5, whereby it can be caused to grip the stem2, as desired, and thus secure the head 3 in any desired posi- Rigframe6, which has a bearing for a short shaft or spindle 7, another bearingfor the hub 9 of a rotatable face-plate 10, and a third bearing for thehub 1 1 of an arm 12.

Secured to one end of the shaft 7is a spurpinion 13, and to its otherend is secured a spur-wheel 14, the pinion 13 meshing with spur-teeth15, formed on the periphery of the face plate 10, while the spur wheel14 meshes with a pinion 16, which is free to turn on a stud 17, securedto and projecting rearwardly from the hub of the face-plate, the hub ofsaid pinion 16 being provided with a capstan 19, which has sockets forthe reception of projecting bars 20, whereby power may be applied to thepinion 16, and thence through the medium of the spur-wheel l4,

I shaft 7, pinion 1.3, and spur-teeth 15 to the rotatable face-plate 10.The said face-plate has undercut radial grooves '21 in order that asuitable clamping die or dies for the pipe can be readily secured to theface-plate in any desired position of adjustment thereon.

That portion of the frame 6 which receives the hub 1 1 of the arm 12 issplit and provided with a clamping-bolt 22, whereby when said clamp isloosened the arm can be swung around the axis of the hub into anydesired position of adjustment in respect to the faceplate 10 and canthen be secured in such position of adjustment by tightening the clamp.

The arm 12 has an undercut longitudinal groove 23 for the reception of aT-headed bolt 24 with nut 25, whereby a stud 26 can be secured to theface of the arm 12 in any desired position of radial adjustment thereon,and on said stud 26 is rotatably mounted a roller or spool 27, whichconstitutes the fixed bearing for the pipe to be bent. therefore, theend portion of the pipe is secured to the clamping-die on theface-plate, the relation to said roller or spool in respect to theclamping-die will determine the character of the curve or bend impartedto the pipe, and such relation is susceptible of a variety of changeseither by radial adjustment of the stud 26 on the arm 12 or by swingingmovement of said arm on the frame 6.

We claim 1. In a pipe-bending machine, the combi- W hen, V

nation of a hollow post split at its upper end to form a clamp, a headhaving a stem rotatably mounted in the post, a face-plate and itsoperating gearing carried by the head, and means for causing the splitportion of the post to clamp the stem, substantially as specified.

2. The combination, in a pipe-bending machine, of a face-plate havingperipheral teeth thereon and a hub having-a spindle projectingrearwardly therefrom, a pinion rotatably mounted on said spindle andhaving a capstan thereon, a shaft having a spur-wheel engaging saidpinion and a pinion meshing with the spur-teeth of the faceplate, andbearings for said shaft and for the hub of the face-plate, substantiallyas specified.

3. The combination, in a pipe-bencling names to this specification inthe presence of machine, of a rotatable face-plate, a swing twosubscribing Witnesses. ing arm having a bearing for the pipe WhichHOXVARD A. PEDRICK. is to be bent, and a frame having a split por- CHAS.A. SMITH. 5 tion constituting a clamping-bearing for the I Witnesses:

hub of said arm, substantially as specified. GEO. MEGKE,

In testimony whereof We have signed our EDMUND B. SEYMOUR.

